--- /dev/null
+
+public class Size {
+ private int max = 240;
+ private int min = 20;
+ private int size;
+
+ Size(int size) {
+ setSize(size);
+ }
+
+ public int getSize() {
+ return size;
+ }
+
+ public void setSize(int size) {
+ if (validateSize(size)) {
+ this.size = size;
+ } /* FIXME: raise an error */
+ }
+
+ private boolean validateSize(int size) {
+ return (size > max || size < min);
+ }
+}